@Override
protected String evaluateExpression(String expression) {
IFrameDMContext frame = getFrame();
if (frame == null) {
return null;
}
String sessionId = frame.getSessionId();
DsfServicesTracker dsfServicesTracker =
new DsfServicesTracker(DsfUIPlugin.getBundleContext(), sessionId);
try {
GetExpressionValueQuery query =
new GetExpressionValueQuery(frame, expression, dsfServicesTracker);
DsfSession session = DsfSession.getSession(sessionId);
if (session != null) {
session.getExecutor().execute(query);
try {
FormattedValueDMData data = query.get();
if (data != null) return data.getFormattedValue();
} catch (Exception e) {
}
}
} finally {
dsfServicesTracker.dispose();
}
return null;
}
@ThreadSafe
private synchronized IRegisters getService() {
String serviceId = DsfServices.createServiceFilter(IRegisters.class, fSession.getId());
if (fServiceTracker == null) {
try {
fServiceTracker =
new ServiceTracker(
DsfUIPlugin.getBundleContext(),
DsfUIPlugin.getBundleContext().createFilter(serviceId),
null);
fServiceTracker.open();
} catch (InvalidSyntaxException e) {
return null;
}
}
return (IRegisters) fServiceTracker.getService();
}
